The Nut,splined,transmission, cataloged under National Stock Number 1615-00-977-7079, is classified within Federal Supply Class 1615 (Helicopter Rotor Blades, Drive Mechanisms and Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1615-00-977-7079 |
| Item Name | Nut,splined,transmission |
| FSC / FSG | 1615 / 16 — Helicopter Rotor Blades, Drive Mechanisms and Components |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL MIL-S-6758 COND D4 OR MIL-S-5626 COND C4,BLACK OXIDE COATED BPS FW4084,DIM.,0.750 IN. NOM O/A LG,3.250 IN. NOM FLANGE OD,0.125 IN. NOM FLANGETHK,2.625-16N CLASS 2A THREADS ON BODYOD BY 0.625 IN. LG,INTERNAL INVOLUTE SPLINE DATA,18 TEETH 0.250 IN. LG ON RIGHT END ID,30.0 DEG PRESSURE ANGLE,1.800 IN. PITCH DIA,1.700 IN. MIN,1.705 IN. MAX MINOR DIA,2.000 IN. NOM MAJOR DIA,FLANGE SIDE ID COUNTERBORED TO 2.125 IN. DIA BY 0.500 IN. DEEP,17 EQUALLY SPACED HOLES 0.187 IN. DIA DRILLED THRU FLANGE FACE ON 2.868 IN. DIA BOLT CIRCLE,17 HOLES 0.104 IN. DIA IN-LINE W/FLANGE HOLES DRILLED THRU OD 0.120 FROM FLANGE FACE A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Reference | Meaning |
|---|---|
| 204-040-184-1 | 5/9 Secondary reference U.S. Government activity |
| 204-040-184-1-17 | 5/9 Secondary reference Diamond Fabrication and Machine Inc |
| 204-040-184 | D/9 Drawing number reference only U.S. Government activity |
| 204-040-184-001 | 3/2 Design control — primary reference U.S. Government activity |
| 204-040-184 | D/9 Drawing number reference only U.S. Government activity |
NSN 1615-00-977-7079 is a Nut,splined,transmission, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
Key specifications for 1615-00-977-7079: General Characteristics Item Description: STEEL MIL-S-6758 COND D4 OR MIL-S-5626 COND C4,BLACK OXIDE COATED BPS FW4084,DIM.,0.750 IN. NOM O/A LG,3.250 IN. NOM FLANGE OD,0.125 IN. NOM FLANGETHK,2.625-16N CLASS 2A THREADS ON BODYOD BY 0.625 IN. LG,INTERNAL INVOLUTE SPLINE DATA,18 TEETH 0.250 IN. LG ON RIGHT END ID,30.0 DEG PRESSURE ANGLE,1.800 IN. PITCH DIA,1.700 IN. MIN,1.705 IN. MAX MINOR DIA,2.000 IN. NOM MAJOR DIA,FLANGE SIDE ID COUNTERBORED TO 2.125 IN. DIA BY 0.500 IN. DEEP,17 EQUALLY SPACED HOLES 0.187 IN. DIA DRILLED THRU FLANGE FACE ON 2.868 IN. DIA BOLT CIRCLE,17 HOLES 0.104 IN. DIA IN-LINE W/FLANGE HOLES DRILLED THRU OD 0.120 FROM FLANGE FACE A. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.